9. In 1998, a public library had 16,000 books. In of 1992, the library had 19,000 books. What is the average rate of change in number of books per year?
Is the answer an increase or a decrease?
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Answer:
Decrease : 500 Per year
Step-by-step explanation:
Books in 1992 = 19000
Books in 1998 = 16000
Books Decreased = 3000
Number of Years 1992 - 1998 = 6 Years
Average Rate of change in number of books per year = 3000 / 6 = 500
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